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6

American Dryer Corp.

450370 - 2

IMPORTANT:

 Make-up air must be provided from a source

free of dry cleaning fumes.  Make-up air that is
contaminated by dry cleaning fumes will result in irreparable
damage to the motors and other dryer components.

Exhaust ductwork should be designed and installed by a
competent technician.  Improperly sized ductwork will create
excessive back pressure, which will result in slow drying,
increased use of energy, and shutdown of the burner by the
airflow (sail) switch, burner hi-limit or lint chamber hi-heat
protector thermostat.  (Refer to the appropriate Installation
Manual for more details.)

CAUTION: Improperly sized or installed exhaust
ductwork can create a potential fire hazard.

Electrical and Gas Requirements

It is your responsibility to have all electrical connections made
by a properly licensed and competent electrician to assure that
the electrical installation is adequate and conforms to local and
state regulations or codes.  In the absence of such codes, all
electrical connections, materials, and workmanship must
conform to the applicable requirements of the National Electrical
Code ANSI/NFPA NO. 70-LATEST EDITION or in Canada, the
Canadian Electrical Codes Parts 1 & 2 CSA C22.1-1990 or
LATEST EDITION.

IMPORTANT: 

Failure to comply with these codes or

ordinances and/or the requirements stipulated in this
manual can result in personal injury or component failure.

The gas dryer installation must meet the American National
Standard...National Fuel Gas Code ANSI Z223.1-LATEST
EDITION, or in Canada, the Canadian Installation Codes CAN/
CGA-B149.1 M91 (Natural Gas) or CAN/CGA-B149.2-M91 (L.P.
Gas) or LATEST EDITION, as well as local codes and
ordinances and must be done by a qualified professional.

NOTE: 

Undersized gas piping will result in ignition

problems, slow drying, and can create a safety hazard.

The dryer must be connected to the type of gas (natural or
L.P.) indicated on the dryer data label.  If this information does
not agree with the type of gas available, contact the reseller
who sold the dryer or contact the factory.

The gas input ratings shown on the dryer data label are for
elevations up to 2,000 feet (609.6 meters), unless elevation
requirements of over 2,000 feet (609.6 meters) were specified
at the time the dryer order was placed with the factory.  The
adjustment for dryers in the field for elevations over 2,000 feet
(609.6 meters) is made by changing the burner orifices.  If this
adjustment is necessary, contact the reseller who sold the dryer
or contact the factory.

NOTE: 

Any burner changes must be made by a qualified

technician.

Operational Service Check Procedure

Turn on electric power to the dryer.

To start dryer:

Display will read “Ready”.

Select a cycle using the keypad of the microprocessor controller
(computer).

The dryer will start, and the display will show cycle type and
minutes remaining.

Make a complete operational check of all the operating controls
to assure that the timing is correct, temperature selection
switches are functioning, etc.

Make a complete operational check of all safety-related circuits:
door switch(es), hi-limit thermostat, sail switch, cycling
thermostats, etc.

For gas dryers a gas pressure test should be taken at the gave
valve pressure tap of each dryer to assure that the water column
pressure is correct and consistent.

NOTE: 

Water column pressure requirements (measured at

the pressure tap on the gas valve body):

Natural Gas _______ 3.0 in WC (6.9 mb)
L.P. Gas __________ 10.5 in WC (26.1 mb)

If computer program changes are required, refer to the Phase
7 Coin Operator’s Manual (ADC P/N 113912) for details.

The dryer should be operated through one complete cycle to
assure that no further adjustments are necessary and that all
components are functioning properly.

Description of Parts ___________________

Control Panel (Microprocessor)

Opening the control panel will allow access to the computer
board.  The keypad inputs to the computer what temperature
and program has been selected.  The computer controls the
entire operation of the dryer.  It accepts inputs and gives outputs
to various parts throughout the dryer.

Summary of Contents for AD30 2R Series

Page 1: ... AD45x2R Service Manual American Dryer Corporation 88 Currant Road Fall River MA 02720 4781 USA Telephone 1 508 678 9000 Fax 1 508 678 9447 e mail techsupport amdry com www adclaundry com ADC Part No 450370 2 ...

Page 2: ...as possible and hope you will find it useful The manufacturer reserves the right to make changes from time to time without notice or obligation in prices specifications colors and material and to change or discontinue models The illustrations included in this manual may not depict your particular dryer exactly IMPORTANT For your convenience log the following information DATE OF PURCHASE __________...

Page 3: ...vated Fire Extinguishing IMPORTANT You must disconnect and lockout the electric supply and the gas supply or the steam supply before any covers or guards are removed from the machine to allow access for cleaning adjusting installation or testing of any equipment per OSHA standards Please observe all safety precautions displayed on the equipment and specified in the installation manual included wit...

Page 4: ...eate a fire hazard Do not use heat for drying articles that contain plastic foam sponge rubber or similarly textured rubber materials Drying in a heated tumbler may damage plastics or rubber and may be a fire hazard Aprogram should be established for the inspection and cleaning of lint in the heating unit area exhaust ductwork and inside the dryer The frequency of inspection and cleaning can best ...

Page 5: ...ch can cause the damper to bind or stick A back draft damper that is sticking partially closed can result in slow drying and shutdown of heat circuit safety switches or thermostats When cleaning the dryer cabinet s avoid using harsh abrasives A product intended for the cleaning of appliances is recommended Adjustments 7 Days After Installation and Every 6 Months Thereafter Inspect bolts nuts screw...

Page 6: ...formation does not agree with the type of gas available contact the reseller who sold the dryer or contact the factory The gas input ratings shown on the dryer data label are for elevations up to 2 000 feet 609 6 meters unless elevation requirements of over 2 000 feet 609 6 meters were specified at the time the dryer order was placed with the factory The adjustment for dryers in the field for elev...

Page 7: ...ering the exhaust system The lint screen should be kept clean at all times The lint screens should be cleaned on a daily basis Lint screens with tears or holes should be replaced immediately Tumbler The tumbler consists of four 4 ribs a shaft and a front rear and mid felt seal The felt seals are used to keep the tumbler sealed to the front and rear panels There are also tie rods which run under ea...

Page 8: ... is too long or has too many sharp bends on it It can also be caused by a lack of make up air The sail switch is located in the back of the dryer beside the burner inlet to the tumbler Temperature Sensor Computer Controls The temperature sensor used is a transducer that converts heat into microamps that the computer board then uses to calculate the temperature Gas Burner Gas dryers are equipped wi...

Page 9: ...sure that all connectors are in place and making proper contact Check input voltages and temperature sensor After replacing any parts or performing adjustments or service run through a complete cycle TO REPLACE COMPUTER 1 Discontinue power to the dryer 2 Open control door 3 Disconnect the J2 J3 J4 J5 and J7 harnesses from the rear of the computer by squeezing the top locking tab and pulling the co...

Page 10: ... particular model may have some differences AD45x2R 4 Disconnect sensor bracket harness connector 5 Disassemble the sensor probe from the bracket assembly by removing the top push on fastener securing the probe to the bracket Use a small screwdriver to slowly pry the fastener off 6 Install new sensor probe assembly by reversing the procedure 7 Reestablish power to dryer NOTE If when power is reest...

Page 11: ...place NOTE Use extreme care when removing and replacing orifices THESE ORIFICES ARE MADE OF BRASS WHICH IS EASILY DAMAGED 3 Reverse the removal procedure for reinstalling WARNING Test all connections for leaks by brushing on a soapy water solution liquid detergent works well NEVER TEST FOR LEAKS WITH A FLAME TO TEST AND ADJUST GAS WATER COLUMN PRESSURE There are two 2 types of devices commonly use...

Page 12: ...f the heat system is activated the sail switch is improperly adjusted and must be readjusted by bending the actuator arm of the sail switch toward the front of the dryer If the actuator arm is bent too far toward the front of the dryer the dryer may not have heat when needed After any adjustments of the sail switch the above procedure must be repeated to verify proper operation CAUTION Do not disa...

Page 13: ...hours 7 After 24 hour curing period install main door on dryer by reversing Step 1 TO REPLACE FRONT PANEL 1 Discontinue power to the dryer 2 Follow procedure for removal of main door assembly 3 Open control service door and lint door IMPORTANT When removing front panel assembly be careful not to damage main door switch wires disconnected in Step 2 7 Reverse this procedure for installing the new fr...

Page 14: ... damaged 3 Reverse procedure for installing the new lint bag 4 Close the lint door Motor TO REPLACE DRIVE MOTOR 1 Discontinue power to the dryer 2 Remove the drive belt 3 Disconnect wiring harness from the motor 4 Remove nuts and washers holding the motor mount to the rear of the dryer and pull motor mount away 5 Remove the bolts holding the motor to the motor mount and replace it with a new motor...

Page 15: ...in a DSI proof time The Phase 7 non coin microprocessor controller computer will continue to recheck the gas valve return signal If the signal is lost during the DSI proof time the Phase 7 non coin microprocessor controller computer will turn off the heat output and determine what the retry count is set at If the retry count is greater than zero the Phase 7 non coin microprocessor controller compu...

Page 16: ...r routine indicates a problem with overheating This error will initiate an Exhaust High Temp Fault condition and will go into Fault Mode with a brief audio indication The Phase 7 non coin microprocessor controller computer determines this error by monitoring the temperature sensor input to have a steady gradual increase in temperature to a known upper limit the limit typically is 20 over the maxim...

Page 17: ...utine prevents the start up of the dryer unless the sail switch is in the open position If the sail switch is in the closed position prior to starting the Phase 7 non coin microprocessor controller computer will display PLEASE WAIT START UP IN PROCESS and will allow the Phase 7 non coin microprocessor controller computer 10 seconds for the sail switch to open before faulting out on a Sail Switch C...

Page 18: ...connections are fine next change the temperature sensor probe 3 If the display still reads Bad Exhaust Temp Probe change the computer board D The display reads Sail Switch Open Fault Refer to page 20 1 The sail switch has opened while dryer is in the heating mode Is the blower motor running normally If not troubleshoot blower motor 2 Check for block or restriction in the exhaust 3 Make sure exhaus...

Page 19: ...tor pin 3 If no voltage check for a loose connection or change the computer board If voltage is present proceed to Step 4 4 Check for voltage to the lint drawer switch If voltage is present check that the switch has continuity when depressed if not replace switch If switch has continuity proceed to Step 5 5 Check for voltage 24 VAC at the computer board J8 connector pin 4 If no voltage check for a...

Page 20: ...20 American Dryer Corporation 450370 2 ...

Page 21: ...Orifice Size For Gas Dryers Gives the number drill size used 6 Electric Service This describes the voltage and current rating for a particular model 7 Gas Manifold Pressure For Gas Dryers This describes the manifold pressure taken at the gas valve tap Using A Manometer HOW TO USE A MANOMETER 1 With dryer in nonoperating mode remove plug on the gas valve pressure tap 2 Install 1 8 N P T fitting sup...

Page 22: ...ve trip point if so water will remain on The control will continue to check if temperature is above trip point every 30 seconds If the water has been on for a constant 10 minutes the water will be turned off regardless of the temperature If the temperature has dropped below trip point the control will turn off the water prior to 10 minutes Static Pressure The pressure of the air in sheet metal duc...

Page 23: ...er downstream of the Pitot tube The following is an example showing the proper location to take a static pressure reading In designing a dryer exhaust duct system it is not necessary to compute the friction loss of the ductwork The friction loss static pressure is predetermined to not exceed 0 3 in WC 0 74 mb This maximum allowable static pressure is the same for all model dryers and is calculated...

Page 24: ...ADC Part No 450370 2 04 10 15 ...

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